I'd like to see some alternate classes of cars, not just new cars.
A stock car would be good. I wouldn't drive it, but I'd like to see it.
A Le Mans prototype would be good as well, or a Radical.
A real supercar, a hypercar, not that psudo-Porsche thingy. Like a big Lambo or a Ferrari.
A big sports sedan, like a midsize Merc or a 3er BMW.
And then a small, really lightweight sports car, like a Miata or an Elise.
Whatever you do, make them really designed, because the current road cars are really generic and pretty bland and understyled, except for the Raceabout.